Talking about (or reading about) networking is not networking. Networking is picking up the phone and making the call. It involves getting the phone time (or face time) to make a contact and make a request. You need to be networking consistently in your job search. An initial flurry of calls is not sufficient to keep your network alive and moving forward.
Networking is not a one-time activity. It is an ongoing process which must be cultivated over time.
Set a personal goal to make at least one (remember, this is a minimum) networking contact per day. And voicemail does not count. You need to make at least one live connection per day. Every day. It's really not as difficult as it may seem. Once you begin your networking, you will find that there are contacts that you should be calling on a weekly basis. As your network expands, you will find additional contacts being added to your list almost daily.
Remember, networking is where many of the best jobs are found. The competition is low. The odds are high. Networking is by far your best opportunity for finding your new job. Keep up the momentum by making a minimum of one network connection per day.